Infertility is defined as a couple’s failure to conceive for one year without contraception in the context of normal sexual intercourse. Infertility in a broad sense also includes couples with recurrent pregnancy loss. Infertility consists of multiple etiological groups and is currently divided into 4 major categories: Female factors: 1. Ovulation disorders, including follicular development abnormalities (e.g. polycystic ovary syndrome, premature ovarian failure, congenital gonadal dysgenesis) and egg expulsion disorders (e.g. luteinized follicle non-rupture syndrome). 2. 2. Pelvic factors, including tubal factors (e.g. chronic tubal inflammation, tubal mucosa destruction, peritubal lesions, tubal insufficiency), uterine factors (e.g. uterine malformation, endometriosis, uterine tumor), cervical factors (e.g. abnormal cervical development, cervical inflammation, cervical redundancy), vulvovaginal factors (e.g. abnormal vulvovaginal development, scar stenosis, vaginal inflammation), other abdominal factors (mainly endometriosis). Male partner factors: including abnormal semen indicators, oligospermia, male sexual dysfunction, abnormal ejaculation, etc. Male and female factors: Both male and female factors can be present singly or together. Unexplained infertility: Low fertility that may be due to age, etc., or may be just a random delay, or some infertility or sterility factors do exist (recessive tubal factors, underlying egg quality abnormalities, fertilization disorders, repeated embryo implantation failures, underlying genetic defects, immunological factors, etc.). In recent years, the number of infertility patients has been increasing, mainly due to inflammatory adhesions in the uterine cavity and adnexa caused by multiple abortions, tubal incompetence and fluid retention, which further lead to infertility, in addition to the above causes. In addition, social competition, employment pressure and environmental degradation are endangering human health and leading to an increase in the number of infertility patients year by year.